Simpson first posted news of the bout on his Facebook page. However, perhaps jumping the gun before he got the greenlight to officially announce the fight, he later issued a disclaimer: "Sorry. That was not official. Still waiting."

Simpson, an Arizona Combat Sports fighter previously reportedly set for a return at UFC 103 in September, joined the UFC after a November 2008 victory over David Avellan in the WEC. Simpson made his octagon debut against Tim McKenzie and needed less than two minutes to post the TKO win at UFC Fight Night 18. Simpson, a two-time All-American wrestler and former coach at Arizona State University, has now posted knockout victories in all five of his professional bouts (four in the first round).

Miller, a former IFL champion, recently suffered his first loss in the UFC when he dropped a unanimous decision to Chael Sonnen at UFC 98. Prior to the loss, he had defeated Rob Kimmons (submission), Matt Horwich (decision) and Jake Rosholt (submission) in UFC contests to extend his overall win streak to nine straight fights.